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puzzling byte-compile-file message: `=' called for effect
From: |
Jim Ottaway |
Subject: |
puzzling byte-compile-file message: `=' called for effect |
Date: |
Tue, 15 Nov 2005 14:42:24 +0000 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux) |
When byte-compiling a file, I get this message:
In nl-publish-markup-list:
nested-lists.el:395:19:Warning: `=' called for effect
What does this mean? I grepped for 'for effect' in Emacs's
lisp/emacs-lisp subdirectory, and found the relevant parts of
byte-opt.el, but I am no wiser.
The code with the '=' in it is:
(when (and nl-paras-fixed-p
(save-excursion
(goto-char nl-markup-start)
(goto-char (muse-line-beginning-position))
(= (forward-line -1) 0)
(looking-at "^\\S-")))
(with-current-buffer nl-temp-buffer
(goto-char (point-min))
(insert "\n\n")))
Any ideas? Does it mean that the byte-compiler thinks that
(forward-line -1) will always return 0 at that point? Or does 'for
effect' mean something else?
--
Jim Ottaway
- puzzling byte-compile-file message: `=' called for effect,
Jim Ottaway <=